Biomass pyrolysis tail gas utilization system

Abstract

The utility model relates to the technical field of biomass pyrolysis, in particular to a biomass pyrolysis tail gas utilization system. The utility model provides a biomass pyrolysis tail gas utilization system which comprises a pyrolysis reactor, a feeding box, an exhaust cabin, a water tank and a heat exchange pipe, the exhaust cabin is arranged above the pyrolysis reactor in a communicated mode, meanwhile, the water tank is arranged on one side of the pyrolysis reactor, water in the water tank is heated through the heat exchange pipe, meanwhile, high-temperature flue gas with waste heat is introduced into the feeding box, and the heat exchange pipe is communicated with the feeding box. And raw materials in the feeding box are preheated, so that the reaction rate of the pyrolysis reactor can be increased while energy sources are fully utilized. The biomass pyrolysis tail gas utilization system is used for solving the technical problem that in the prior art, heat energy in high-temperature flue gas exhausted in the using process of the biomass pyrolysis tail gas utilization system cannot be recycled, and the purposes of recycling the heat energy in the high-temperature flue gas exhausted in the using process of the biomass pyrolysis tail gas utilization system and reducing energy waste are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass pyrolysis, in particular to a biomass pyrolysis tail gas utilization system. Background Art

[0002] Biomass refers to various organisms formed through photosynthesis, including all animals, plants and microorganisms. At present, the utilization of biomass mainly refers to various agricultural and forestry wastes, such as straw, wood chips, rice husks, etc. The main ways of biomass utilization include straw compost returning to the field, straw industrial raw material utilization, straw feed utilization and straw energy utilization. Among them, straw energy utilization has been widely emphasized and studied due to its high utilization efficiency and good benefits. The biomass pyrolysis treatment technology is a thermal cracking method for straw raw materials through an efficient pyrolysis device under the reaction conditions of hypoxia and high temperature, producing products such as bio-gas, bio-oil and biochar. These products are widely used, have high added value, and have better benefits than traditional direct incineration treatment.

[0003] During the use of the existing biomass pyrolysis tail gas utilization system, a large amount of hot gas will be generated. However, the high-temperature flue gas discharged during pyrolysis will be directly discharged, and the heat energy in the high-temperature flue gas cannot be recovered and utilized, resulting in a large amount of energy waste. Content of the Utility Model

[0004] The utility model provides a biomass pyrolysis tail gas utilization system to solve the technical problem that the heat energy in the high-temperature flue gas discharged during the use of the existing biomass pyrolysis tail gas utilization system cannot be recovered and utilized, achieving the purpose of recovering and utilizing the heat energy in the high-temperature flue gas discharged during the use of the biomass pyrolysis tail gas utilization system and reducing energy waste.

[0005] The utility model provides a biomass pyrolysis tail gas utilization system, including:

[0006] A pyrolysis reactor;

[0007] A feed box, arranged on one side of the pyrolysis reactor, and the feed box is communicated with the input end of the pyrolysis reactor;

[0008] An exhaust chamber, arranged above the pyrolysis reactor, and one end of the exhaust chamber close to the pyrolysis reactor is communicated with the top of the pyrolysis reactor;

[0009] A water tank, arranged on the other side of the pyrolysis reactor;

[0010] Heat exchange tubes, fixedly arranged on the outer side walls of the exhaust chamber and the water tank.

[0011] According to the biomass pyrolysis tail gas utilization system provided by the invention: the feed box is communicated with one end of the exhaust chamber far away from the pyrolysis reactor.

[0012] The biomass pyrolysis tail gas utilization system provided by the present invention: A stirring mechanism is arranged in the feed box, and the feed box is communicated with the input end of the pyrolysis reactor through a screw feeding mechanism.

[0013] The screw feeding mechanism of the biomass pyrolysis tail gas utilization system provided by the present invention includes a reduction motor, a rotating shaft, screw blades, and a feed pipe. The side wall of the feed pipe is communicated with the output end of the feed box, one end of the feed pipe is communicated with the pyrolysis reactor, the rotating shaft penetrates through the other end of the feed pipe, the end of the rotating shaft exposed outside the feed pipe is fixedly connected with the output end of the reduction motor, and screw blades are fixedly arranged on the side wall of the end of the rotating shaft arranged inside the feed pipe.

[0014] The biomass pyrolysis tail gas utilization system provided by the present invention: A gas feeding mechanism is connected to one side wall of the pyrolysis reactor. The gas feeding mechanism includes an inlet pipe, a two-way valve, a pressure gauge, a pressure reducing valve, and a mass flow meter. One end of the inlet pipe is communicated with the pyrolysis reactor, and the two-way valve, the pressure gauge, the pressure reducing valve, and the mass flow meter are all arranged on the inlet pipe. The mass flow meter, the pressure reducing valve, the pressure gauge, and the two-way valve are sequentially arranged on the side of the inlet pipe close to the pyrolysis reactor.

[0015] The biomass pyrolysis tail gas utilization system provided by the present invention: A heating tape is wound around the outer side wall of the feed pipe. The pyrolysis reactor is connected to the exhaust chamber through a three-way pipe, and the other output end of the three-way pipe is connected to a gas chromatography-mass spectrometry detector.

[0016] The beneficial effects produced by the present utility model:

[0017] The present utility model provides a biomass pyrolysis tail gas utilization system, which includes a pyrolysis reactor, a feed box, an exhaust chamber, a water tank, and a heat exchange pipe. The exhaust chamber is communicated above the pyrolysis reactor, and a water tank is arranged on one side thereof. The water in the water tank is heated through the heat exchange pipe. At the same time, the high-temperature flue gas with remaining heat is introduced into the feed box to preheat the raw materials in the feed box, which can not only make full use of energy but also improve the reaction rate of the pyrolysis reactor. It is used to solve the technical problem that the heat energy in the high-temperature flue gas discharged during the use of the biomass pyrolysis tail gas utilization system in the prior art cannot be recycled, and achieves the purpose of recycling the heat energy in the high-temperature flue gas discharged during the use of the biomass pyrolysis tail gas utilization system and reducing energy waste.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0020] Figure 1 is an axonometric view of the biomass pyrolysis tail gas utilization system;

[0021] Figure 2 is the front view of the biomass pyrolysis tail gas utilization system;

[0022] Figure 3 is the right view of the biomass pyrolysis tail gas utilization system.

[0023] Reference numerals:

[0024] 1, pyrolysis reactor; 2, feed box; 201, stirring mechanism; 202, screw feeding mechanism; 3, exhaust chamber; 4, water tank; 5, heat exchange tube; 6, gas feeding mechanism; 601, inlet pipe; 602, two-way valve; 603, pressure gauge; 604, pressure reducing valve; 605, mass flowmeter; 7, gas chromatography-mass spectrometry detector; 701, valve. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the attached drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the attached drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the referred mechanisms or elements must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0028] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0030] The following Figures 1 to 3 describes the technical solution of the present utility model in conjunction with the

[0031] The present utility model provides a biomass pyrolysis tail gas utilization system, including: a pyrolysis reactor 1; a feed tank 2, arranged on one side of the pyrolysis reactor 1, and the feed tank 2 is communicated with the input end of the pyrolysis reactor 1; an exhaust chamber 3, arranged above the pyrolysis reactor 1, and one end of the exhaust chamber 3 close to the pyrolysis reactor 1 is communicated with the top of the pyrolysis reactor 1; a water tank 4, arranged on the other side of the pyrolysis reactor 1; and heat exchange tubes 5, fixedly arranged on the outer side walls of the exhaust chamber 3 and the water tank 4.

[0032] It is understandable that the present utility model provides a biomass pyrolysis tail gas utilization system. The high-temperature tail gas generated by the reaction of the pyrolysis reactor 1 is introduced into the exhaust chamber 3. The side wall of the exhaust chamber 3 is provided with a heat exchange tube 5, and the other end of the heat exchange tube 5 is arranged on the side wall of the water tank 4. The temperature of the high-temperature tail gas in the exhaust chamber 3 can be transferred to the side wall of the water tank 4 through the heat exchange tube 5 to heat the water in the water tank 4. The top of the exhaust chamber 3 is connected to the inside of the feed box 2 to preheat the raw materials inside the feed box 2, improve the working efficiency of the pyrolysis reactor 1, and at the same time further utilize the tail gas of the pyrolysis reactor 1.

[0033] In the present utility model, the pyrolysis reactor 1 is selected as a common pyrolysis reactor 1. The function of the pyrolysis reactor 1 is to carry out biomass pyrolysis. The side wall of the pyrolysis reactor 1 is connected to a feed box 2, and the top of the pyrolysis reactor 1 is connected to an exhaust chamber 3;

[0034] The feed box 2 is arranged on one side of the pyrolysis reactor 1. The feed box 2 is connected to the input end of the side wall of the pyrolysis reactor 1. The function of the feed box 2 is to add the raw materials for biomass pyrolysis into the pyrolysis reactor 1. The feed box 2 can add solid or liquid reaction raw materials into the pyrolysis reactor 1. The shape of the feed box 2 is a cylindrical barrel. If it is solid raw materials, they can be transported into the interior of the pyrolysis reactor 1 through a feeding mechanism. If it is liquid raw materials, the liquid raw materials can be directly flowed into the pyrolysis reactor 1 through the connected pipeline. An exhaust hole is opened at the top of the feed box 2 to avoid excessive air pressure inside the feed box 2.

[0035] The exhaust chamber 3 is arranged above the pyrolysis reactor 1. One end of the exhaust chamber 3 close to the pyrolysis reactor 1 is connected to the top of the pyrolysis reactor 1. The high-temperature tail gas generated by the reaction of the pyrolysis reactor 1 is directly introduced into the exhaust chamber 3. The high-temperature tail gas in the exhaust chamber 3 transfers heat to the water tank 4 through the heat exchange tube ⑤ to heat the water in the water tank 4, making full use of the high-temperature tail gas generated by biomass pyrolysis. The shape of the exhaust chamber 3 is also a cylindrical barrel. The bottom end of the exhaust chamber is connected to the exhaust port of the pyrolysis reactor 1 through a connecting pipeline. The top end of the exhaust chamber 3 is connected to the input end of the feed box 2 through a connecting elbow. The high-temperature tail gas enters the feed box 2 after heat exchange in the exhaust chamber 3 to preheat the raw materials inside the feed box 2 and improve the pyrolysis rate of the pyrolysis reactor 1.

[0036] The water tank 4 is arranged on the side of the pyrolysis reactor 1 away from the exhaust chamber 3. The shape of the water tank 4 is set as a cylinder. The water inlet of the water tank 4 is opened at the top of the water tank 4. A faucet is arranged at the bottom end of the side wall of the water tank 4. Support columns are arranged at the bottom of the water tank 4 to facilitate the staff to use hot water;

[0037] The heat exchange tube 5 is fixedly arranged on the outer side walls of the exhaust chamber 3 and the water tank 4. The heat exchange tube 5 is in the shape of a notch. The inner walls of the two semi-circular rings on both sides of the heat exchange tube 5 are respectively fixedly connected to the outer side walls of the exhaust chamber 3 and the water tank 4. The two straight pipes of the heat exchange tube 5 are used to connect the two semi-circular rings on both sides.

[0038] In the present utility model, reaction raw materials are introduced into the pyrolysis reactor 1 through the feed box 2. Then, the high-temperature tail gas generated by the pyrolysis reactor 1 enters the exhaust chamber 3. The cold water in the water tank 4 is heated through the heat exchange tube 5. Then, the high-temperature tail gas enters the feed box 2 again, and the raw materials in the feed box 2 can be preheated. While improving the working rate of the pyrolysis reactor 1, the heat energy of the high-temperature tail gas discharged by the pyrolysis reactor 1 can be utilized, reducing energy waste.

[0039] According to the biomass pyrolysis tail gas utilization system provided by the present invention: The feed box 2 communicates with one end of the exhaust chamber 3 far away from the pyrolysis reactor 1.

[0040] In the present utility model, the side wall of the feed box 2 communicates with one end of the exhaust chamber 3 far away from the pyrolysis reactor 1 through a connecting elbow. After the high-temperature tail gas exchanges heat through the heat exchange tube 5, the raw materials in the feed box 2 can be preheated, improving the working rate of the pyrolysis reactor 1.

[0041] According to the biomass pyrolysis tail gas utilization system provided by the present invention: A stirring mechanism 201 is arranged in the feed box 2. The feed box 2 communicates with the input end of the pyrolysis reactor 1 through a screw feeding mechanism 202.

[0042] In the present utility model, a stirring mechanism 201 is arranged in the feed box 2. The stirring mechanism 201 includes a stirring shaft, stirring blades and a driving motor. The stirring shaft penetrates the top end of the feed box 2. Stirring blades are fixedly arranged on the circumferential side wall of one end of the stirring shaft located inside the feed box 2. One end of the stirring shaft exposed outside the feed box 2 is fixedly connected to the output pipe of the driving motor. The feed box 2 communicates with the input end of the pyrolysis reactor 1 through a screw feeding mechanism 202. When the raw materials for biomass pyrolysis are solid or liquid, the screw feeding mechanism 202 can better feed the raw materials into the pyrolysis reactor 1.

[0043] According to the biomass pyrolysis tail gas utilization system provided by the present invention: The screw feeding mechanism 202 includes a reduction motor, a rotating shaft, screw fan blades and a feed pipe. The side wall of the feed pipe communicates with the output end of the feed box 2. One end of the feed pipe communicates with the pyrolysis reactor 1. The rotating shaft penetrates the other end of the feed pipe. One end of the rotating shaft exposed outside the feed pipe is fixedly connected to the output end of the reduction motor. Screw fan blades are fixedly arranged on the side wall of one end of the rotating shaft arranged inside the feed pipe.

[0044] In the present utility model, the spiral feeding mechanism 202 includes a reduction motor, a rotating shaft, spiral fan blades and a feeding pipe. The side wall of the feeding pipe is connected to the output end of the feeding box 2. The feeding box 2 is arranged above the feeding pipe, and the feeding box 2 can be supported by a support frame. A rotatable baffle is arranged at the connection between the feeding box 2 and the feeding pipe. When the raw materials in the feeding box 2 are preheated and stirred, the baffle is closed. When the pyrolysis reactor 1 is heated to an appropriate temperature, the baffle is rotated, and the raw materials in the feeding box 2 will enter the pyrolysis reactor 1. One end of the feeding pipe is communicated with the input end of the pyrolysis reactor 1. The rotating shaft is arranged inside the feeding pipe and the end far from the pyrolysis reactor 1 penetrates through the feeding pipe. The end of the rotating shaft exposed outside the feeding pipe is fixedly connected to the output end of the reduction motor. The reduction motor is started to drive the rotating shaft to rotate. Spiral fan blades are fixedly arranged on the side wall of one end of the rotating shaft arranged inside the feeding pipe, so as to drive the spiral fan blades to convey the reaction raw materials flowing from the feeding box 2 into the feeding pipe to the pyrolysis reactor 1.

[0045] According to the biomass pyrolysis tail gas utilization system provided by the present invention: A gas feeding mechanism 6 is connected to one side wall of the pyrolysis reactor 1. The gas feeding mechanism 6 includes an air inlet pipe 601, a two-way valve 602, a pressure gauge 603, a pressure reducing valve 604 and a mass flowmeter 605. One end of the air inlet pipe 601 is communicated with the pyrolysis reactor 1. The two-way valve 602, the pressure gauge 603, the pressure reducing valve 604 and the mass flowmeter 605 are all arranged on the air inlet pipe 601. The mass flowmeter 605, the pressure reducing valve 604, the pressure gauge 603 and the two-way valve 602 are sequentially arranged on the air inlet pipe 601 close to the pyrolysis reactor 1.

[0046] In the present utility model, a gas feeding mechanism 6 is connected to one side wall of the pyrolysis reactor 1. The feeding box 2 and the gas feeding mechanism 6 are arranged to carry out the biomass pyrolysis reaction under the "gas-liquid" mixed atmosphere. The gas feeding mechanism 6 includes an air inlet pipe 601, a two-way valve 602, a pressure gauge 603, a pressure reducing valve 604 and a mass flowmeter 605. In the present utility model, a plurality of air inlet pipes 601 are arranged, and each air inlet pipe 601 is communicated with different gases. One end of the air inlet pipe 601 is communicated with the pyrolysis reactor 1. The two-way valve 602, the pressure gauge 603, the pressure reducing valve 604 and the mass flowmeter 605 are all arranged on the air inlet pipe 601. The mass flowmeter 605, the pressure reducing valve 604, the pressure gauge 603 and the two-way valve 602 are sequentially arranged on the air inlet pipe 601 close to the pyrolysis reactor 1. Among them, the pressure of the gas can be displayed by the pressure gauge 603. Since the pressure of the mass flowmeter 605 cannot exceed 0.3 MPa, if the pressure gauge 603 shows that the pressure of the air inlet pipe 601 is too high, the pressure of the air inlet pipe 601 can be controlled by adjusting the pressure reducing valve 604 to avoid unnecessary damage to the mass flowmeter 605.

[0047] The biomass pyrolysis tail gas utilization system provided by the present invention: a heating tape is wound around the outer side wall of the feed pipe, the pyrolysis reactor 1 is connected to the exhaust chamber 3 through a tee pipe, and the other output end of the tee pipe is connected to a gas chromatography-mass spectrometry detector 7.

[0048] In the present utility model, a heating tape is wound around the outer side wall of the feed pipe to further heat the raw materials in the feed tank 2, ensuring that the temperature of the raw materials is relatively high when entering the pyrolysis reactor 1, thereby improving the working efficiency of the pyrolysis reactor 1.

[0049] The pyrolysis reactor 1 is connected to the exhaust chamber 3 through a tee pipe. The other output end of the tee pipe is connected to a gas chromatography-mass spectrometry detector 7 through a connecting pipe section. A valve 701 is provided on this connecting pipe section. Opening the valve 701 can introduce the gas generated by the pyrolysis of the pyrolysis reactor 1 into the gas chromatography-mass spectrometry detector 7 for detection. The real-time detection data can be viewed on the externally connected terminal, which is better for analyzing whether there are recyclable substances in the flue gas generated by pyrolysis. Just close the valve 701 when no detection is needed.

[0050] The working principle of the present utility model is: Feed the raw materials into the feed tank 2 and start the stirring mechanism 201 for stirring. Then start the pyrolysis reactor 1 to heat up. The generated high-temperature gas is introduced into the exhaust chamber 3, and the water in the water tank 4 is heated through the heat exchange pipe 5. After the high-temperature gas is cooled by passing through the heat exchange pipe 5, it is then introduced into the interior of the feed tank 2 to preheat the raw materials in the feed tank 2. After the temperature of the pyrolysis reactor 1 rises to an appropriate range, rotate the baffle plate, and the raw materials in the feed tank 2 enter the pyrolysis reactor 1 through the spiral feeding structure for reaction. The generated high-temperature flue gas continues to be discharged into the exhaust chamber 3 for heat exchange, and at the same time, it also enters the feed tank 2 to preheat the new raw materials added to the feed tank 2 until all the raw materials are completely pyrolyzed and the reaction is stopped.

[0051] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A biomass pyrolysis tail gas utilization system, characterized in that, Comprising: A pyrolysis reactor (1); A feed box (2) arranged on one side of the pyrolysis reactor (1), and the feed box (2) is communicated with the input end of the pyrolysis reactor (1); An exhaust chamber (3) arranged above the pyrolysis reactor (1), and one end of the exhaust chamber (3) close to the pyrolysis reactor (1) is communicated with the top of the pyrolysis reactor (1); A water tank (4) arranged on the other side of the pyrolysis reactor (1); Heat exchange tubes (5) fixedly arranged on the outer side walls of the exhaust chamber (3) and the water tank (4).

2. The biomass pyrolysis tail gas utilization system according to claim 1, wherein: The feed box (2) is communicated with one end of the exhaust chamber (3) far from the pyrolysis reactor (1).

3. The biomass pyrolysis tail gas utilization system according to claim 1, characterized in that: A stirring mechanism (201) is arranged in the feed box (2), and the feed box (2) is communicated with the input end of the pyrolysis reactor (1) through a screw feeding mechanism (202).

4. The biomass pyrolysis tail gas utilization system according to claim 3, wherein: The screw feeding mechanism (202) includes a reduction motor, a rotating shaft, screw blades and a feed pipe. The side wall of the feed pipe is communicated with the output end of the feed box (2), one end of the feed pipe is communicated with the pyrolysis reactor (1), the rotating shaft penetrates through the other end of the feed pipe, and one end of the rotating shaft exposed outside the feed pipe is fixedly connected with the output end of the reduction motor. Screw blades are fixedly arranged on the side wall of one end of the rotating shaft arranged in the feed pipe.

5. The biomass pyrolysis tail gas utilization system according to claim 1, wherein: A gas feeding mechanism (6) is connected to one side wall of the pyrolysis reactor (1). The gas feeding mechanism (6) includes an inlet pipe (601), a two-way valve (602), a pressure gauge (603), a pressure reducing valve (604) and a mass flowmeter (605). One end of the inlet pipe (601) is communicated with the pyrolysis reactor (1), and the two-way valve (602), the pressure gauge (603), the pressure reducing valve (604) and the mass flowmeter (605) are all arranged on the inlet pipe (601). A mass flowmeter (605), a pressure reducing valve (604), a pressure gauge (603) and a two-way valve (602) are sequentially arranged on one side of the inlet pipe (601) close to the pyrolysis reactor (1).

6. The biomass pyrolysis tail gas utilization system according to claim 4, wherein: A heating tape is wound around the outer side wall of the feed pipe. The pyrolysis reactor (1) is connected to the exhaust chamber (3) through a three-way pipe, and the other output end of the three-way pipe is connected to a gas chromatography-mass spectrometry detector (7).

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